Do you see any error msgs displayed?
When you push the unlock button, do you hear anything?

If either of the above, Turn off circuit breaker to the oven for about 2 minutes, then with an assistant standing by, push in on the oven door (at the handle area), and hold it in while assistant turns the circuit breaker back on.

This worked for Breezygirl, as I recall, just before last Thanksgiving.

This happened a couple of years ago on my KA. The solenoid that moves the lock back and forth had frozen or something. I had never used the self clean very often at all over the years. The repair guy suggested that if you don't use the self clean very often at least click it on then off occasionally to keep the mechanism free. Whether that's true or not I don't know.. but I do it now and then. He had to access it by removing the back panel.

Thanks for your postings. Gary, we tried that trick, but it didn't work. We can hear a very low-sounding motor sound when we switch the breaker back on, but can't get anything to do anything. Except the light will go on and off!

Yes, we tried turning of the circuit breaker...several times. And tried pushing in the door as we turned it back on as Gary suggested. No response. We have the E series, single wall oven. I am sure glad I tried this before the warranty was over!

Yes, Gary, we had a problem with the MDL code in the past and supposedly the latch was fixed. i'm not sure if this is the same issue. This was the first time I had run the self-clean, and no code at all appears on the read-out. So I didn't connect the problems, but maybe there is a connection. And btw, I would LIKE to check my porcelain again because I have read about those problems. But, uh, my problem is I can't open the door to check it!!

Update: Service tech just came out and after quite a bit of hassle, finally got the door open. He talked to a Wolf rep and they think the wrong latch was installed after my MDL error code. So they are going to order a new latch as well as a new relay board, since that might have been damaged with the wrong latch. So far sounds okay to my novice ear.
But, after he left and I was cleaning up the residue from the cleaning mode, I noticed there was some blue porcelain flakes on my rag...on closer inspection, there is a gash-like mark just a little under 1/2" long on the right front side of the oven. Do you think this is from the high heat of the self-clean? Never noticed this before and I have been diligent about checking this. I'm not sure how problematic this is or could be. Thoughts?